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RT8128A/C 是用于笔记型电脑的 CPU 内核、I/O 系统和 RAM 供电的高效 PWM 控制器，具有卓越的瞬态回应特性和高输出电压精度。特别设计的 Richtek Mach Response<sup>TM</sup> 技术对负载的瞬变过程具有 100ns 的“即时”回应能力，同时还能维持相对固定的开关切换频率。与传统的电流模式 PWM 相比，RT8128A/C 省略了对电流检测电阻的需求，既降低了成本，又提高了效率。效率的进一步改善还表现在它所具有的驱动大型同步整流 MOSFET 的能力上，使之可以很高的效率直接将来自电池的高电压转换为系统所需的低电压，可为 CPU 内核、晶片组、DRAM 和其它低压元件提供低达 0.6V 的电压。
RT8128A/RT8128C 电路图
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<div class="spec-list"><ul class="lv1"><li>采用 Richtek Mach Response<sup>TM</sup> 技术 </li><li>VCC 工作电压范围： 4.5V~13.2V </li><li>输出电压VOUT 范围：0.6V~5V </li><li>功率级输入电压范围：2.5V~24V </li><li>关机电流消耗：<10μA </li><li>工作频率：固定 300kHz </li><li>二极体模拟模式 (RT8128A) </li><li>VIN 检测 </li><li>LGATE过流阈值设定方式(LGOCS) </li><li>Power Good 指示 </li><li>内嵌自举开关 </li><li>下桥电流检测模式的电流限制 </li><li>1% 精度的内部 V<sub>REF</sub> = 0.6V </li><li>有使能功能 </li><li>OVP/UVP/OTP/Pre-OVP/OCP </li><li>符合 RoHS 规范，不含卤素 </li></ul></div>
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RT8128A/RT8128C 订购信息
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<div class="spec-list"><ul class="lv1"><li>低达 0.6V 晶片组/RAM 电源 </li><li>通用 DC/DC 电源调节器 </li></ul></div>
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